Gas-phase reactions for selective detection of the explosives TNT and RDX

dc.creatorMeurer, EC
dc.creatorChen, H
dc.creatorRiter, L
dc.creatorCotte-Rodriguez, I
dc.creatorEberlin, MN
dc.creatorCooks, RG
dc.date2004
dc.date39083
dc.date2014-11-13T17:21:52Z
dc.date2015-11-26T17:10:39Z
dc.date2014-11-13T17:21:52Z
dc.date2015-11-26T17:10:39Z
dc.date.accessioned2018-03-28T23:59:12Z
dc.date.available2018-03-28T23:59:12Z
dc.identifierChemical Communications. Royal Soc Chemistry, n. 1, n. 40, n. 41, 2004.
dc.identifier1359-7345
dc.identifierWOS:000188239000015
dc.identifier10.1039/b309962h
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/67800
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/67800
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/67800
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1280913
dc.descriptionHighly selective gas-phase reactions with ethyl vinyl ether (EVE) of major electron (EI) and chemical ionization (CI) fragment ions of the explosives TNT and RDX have been uncovered. The fragment ion of m/z 210 from TNT undergoes [4(+) + 2] cycloaddition with EVE to form an oxo-iminium ion of m/z 282, which dissociates by acetaldehyde loss after a [1,5-H] shift to form a quinolynium ion of m/z 238. The fragment ion of m/z 149 from RDX reacts with EVE by a formal vinylation reaction, that is, the elusive cyclic adduct loses ethanol to yield a nitro-iminium ion of m/z 175, which reacts further with EVE to form a second cyclic product ion of m/z 247. Calculations and MS/MS experiments support the proposed structures. These highly characteristic reactions of diagnostic El and CI fragment ions improve selectivity for TNT and RDX detection.
dc.descriptiono TEXTO COMPLETO DESTE ARTIGO, ESTARÁ DISPONÍVEL À PARTIR DE AGOSTO DE 2015.
dc.description1
dc.description40
dc.description41
dc.languageen
dc.publisherRoyal Soc Chemistry
dc.publisherCambridge
dc.publisherInglaterra
dc.relationChemical Communications
dc.relationChem. Commun.
dc.rightsembargo
dc.sourceWeb of Science
dc.subjectPerformance Liquid-chromatography
dc.subjectPolar 4(+)+2 Cycloaddition
dc.subjectChemical-ionization
dc.subjectAcylium Ions
dc.subjectSamples
dc.subjectCations
dc.titleGas-phase reactions for selective detection of the explosives TNT and RDX
dc.typeArtículos de revistas


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